Kits are unassembled airplanes, either wood, foam, or other material, which require the modeler to build the plane using detailed instructions and/or plans. These are projects that generally take a detail-oriented, patient, and creative individual as the time to build is approximately 20-40 hours for the average model. There are huge learning opportunities in the building process, and generally speaking, the model builders are the most knowledgeable as well. Many accessories will be needed to complete the airplane, so be sure to look at the "items needed" section for suggestions.